40 Radical Signal Extraction Pulse Oximeter Operator’s Manual
4
TREND PERIOD
The Trend period setting determines how often a set of SpO
2
and pulse rate data points is
stored in trend memory. A setting of 2, for example, sets the Radical to store one set of
SpO
2
and pulse rate measurements every 2 seconds, resulting in a minimum trend
capacity of 72 hours. A setting of 10, for example sets the Radical to store one set of data
points every 10 seconds, resulting in a typical trend storage capacity of 30 days.
NOTE: Since the Radical employs a sophisticated data compression scheme the actual
trend capacity is dependent on the type of data that is collected.
backlight/contrast operation
The backlit LCD screen of the Radical Handheld can be set to four levels of illumination, in
addition to no illumination, when Radical operates as a standalone pulse oximeter. The
Radical temporarily indicates the illumination level on the display following a change in
illumination level. To select the level of illumination simply press the Backlight/Contrast
button located on the front panel of the Handheld.
When the Radical Handheld unit is released from the Docking Station the illumination of
the LCD screen automatically reverts to the lowest level (backlight off) to conserve battery
power. To select a different level of illumination, press the Backlight/Contrast button again.
In the Handheld mode, three levels of illumination are available.
When the Handheld unit is re-attached to the Docking Station, as well as when the Radical
is powered on in the Standalone configuration, the backlight is automatically set to the
maximum illumination when the unit is AC line powered.
To change the contrast of the LCD screen, select the Contrast parameter of the Display
menu. While changing the contrast setting, the screen will refresh to reflect the current
setting.
The contrast of the LCD screen can also be changed by depressing and holding the
Backlight/Contrast button located on the front panel of the Handheld. While holding the
Backlight/Contrast button, the screen will refresh to reflect the current setting. Release the
button at the desired setting.
satshare operation
When the SatShare cable is connected to the Radical and to a multiparameter patient
monitor, the Radical automatically starts to operate in the SatShare mode.
In the SatShare mode, Radical operates as follows:
■
All visual alarms remain active.
■
All audible alarms may be disabled by software configuration of the Radical.
■
The SpO
2
and pulse rate numbers may or may not be displayed on the Radical
display depending on the SatShare Numbers setting of the General menu.
■
All other items are displayed, including the alarm limits, the plethysmogram and
Signal IQ waveform.
operation
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